Improvement in ore-concentrators



l. A. PEER.

Ore Concentrators.

lllllll Patented p er 9, 1873.

NWIJIII I A I/II/A '/////////////////////////:w///////////// lllwsscs25% m JOHN A. PEER, OF GRASS VALLEY, OALIFORNIA.'

IMPROVEMENT IN ORE-CONCENTRATORS.

Specification forming part of Letters Patent No. 142,646, datedSeptember 9, 1873; application filed I June 18, 1873.

To all whom it may concern:

Be it known that I, JOHN ANTONE PEER, of Grass Valley, Nevada county,State of California, have invented a Concentrator and I do herebydeclare the following description and accompanying drawings aresufficient to enable any person skilled in the art or science to whichit most nearly appertains to make and use my said invention orimprovement without further invention or experiment.

The objectof my invention is to provide an improved machine forconcentrating and saving sulphurets, amalgam, and other valuable heavyproducts which are found among the tailings of quartz-mills or ofgraVeLWashing; and it consists in the employment of a suspended orloosely-supported table, upon which the tailings are distributed,together with a considerable quantity of water, the table bein gsubjected to a novel oscillatory movement both longitudinally and fromside to side at the same time, so that the motion very" nearly resemblesthat employed in the hand-pan process. The movement is communicated tothe table by means of a peculiar screw-shaped cam, and the table isprovided with a discharge-roller at its bottom, which is made to rotateslowly while the table is in operation.

Referrin g to the accompanying drawings for a more complete explanationof my invention, Figure l is a longitudinal elevation in section. Fig. 2is a plan or top view. Fig. 3 is a separate view of the cam.

The table consists of two bottoms, A and B, inclined toward each other,the bottom A being long, while the bottom B is short and of a muchgreater inclination, as shown. Above the table the feed-trough '0 issituated, extending across between the sides D D, and bein g perforatedat e 6, so that its contents will be distributed over the surface of thetable. The outer or discharge end of the table is supported upon apulley or roller F, upon which it moves back and forth, and its innerend is suspended, by the links or chains G, from the upright frame H, orfrom some part of the building. The roller or pulley F can be raised orlowered to suit the grade of material pass ing. The operating deviceconsists of a cylinder, I, which is grooved around its periphery thegroove being formed into two cams, J, so that the arm K, whichprojects'into the groove from the table, will be alternately pressedback, and then allowed to swing suddenly forward and strike the bottomof the groove, which gives the table a sudden jarring motion in thedirection of its length. In order to give the desired wabbling or sidemotion, the groove in the cylinder is not made around the cylinder inthe same plane, but is inclined to one side at the offset of one of thecams, and to the other side at the other cam, as shown at L. By thisconstruction the arm K not only falls to the bottom of the groove, butis also pushed alternately to one side and then to the other, so thatwhen the table swings forward, after one cam passes, it will swing toone side, and after the other cam, it will swing to the other side. Acylinder, M, is secured so as to be adjustable and rotate in boxes ateach side of the table, and just below the meeting-point of the twoplanes, A and B, where a slot is made entirely across the table. Thiscylinder may be fluted or plain, and has secured to one end theratchetwheel N. An arm, 0, is pivoted to the frame H, and extends outover the ratchet-wheel; and another arm, 1?, is pivoted to the end ofthe arm 0 and to the end of the shaft or cylinder M. A pawl, S, attachedto the arm P,

rests in the teeth of the ratchet, and, as the l table swings back andforth, this pawl feeds the ratchet forward, and thus turns the cylinderM.

The operation will be as follows: The pulp or tailings, being let intothe trough G, will be distributed over the surface of the table,

and,by the movement of the table, the heavier particles, sulphurets, andamalgam, will be gradually carried down to the openingat the intersection of the inclined bottoms, where the cylinder M will carry themout and deposit them in the trough Qflbelow. The lighter portions willflow out at the rear end, in the usual manner. A perforated pipe, It,crosses the table just over the bottom B, and water FFICE.

is distributed from it, so as to wash down and 2. In combination withthe peculiar camciean all the sulphurets, and insure their passcylinderI, the table mounted upon the roller in g out over the cylinder M. F andlinks G, and having the double bottom Having thus described myinvention,what I A B and the discharge-cylinder M, substanclaim, and desire tosecure by Letters Patent, tially as and for the purpose hereindescribed.

isi In Witness whereof I hereunto set my hand 1. The cylinder I, withits cams J and the and seal.

peculiarly-inclined groove L, constructed to JOHN ANTONE PEER. [L. s.]

operate the table through the arm K, sub- Witnesses:

stantialiy as and for the purpose herein de- GEO. H. STRONG,

scribed. 0. M. RICHARDSON.

